Urine pump



Patented Apr. 21, 1942 URIN-E PUMP Helmuth; R. Liebetrau, Passaic, N. J. Application `April s, iessgserial Nat-200,515

2claim`s- .tomes-,229)

This Ainvention relates to pumping assemblies `or fsimilar smeans, particularly designed `for `use `in hospitals, sick rooms and thelikelforthe .re-

moval -of `Wastematerials such as urine from `the `human body or the evacuation of blood during:

operations.

lIt `is an object of this invention to providea novel pumpassembly for removing waste material from vthe human body such as urine or blood during operations which assembly is capable of "being readily sterilized and susceptible of repeated use.

Still afurther object of thisinvention` is to provide anovel pump construction `particularly adapted for use in connection `with the removal of `waste from the human body wherein the elements .thereof are made of material, not suscepf` .tible to corrosion nor injury by such Waste products. More specifically this invention-relates to `the manufacture of a pump assembly of Duronze 11'. l l

Further objects of the invention will appear `from the following `description when read in connection with the attached drawing, wherein: `Figurei is a side elevation showing a preferred embodiment of `the .present invention in position @means of support. Rod 135 ,is conveniently rowtated by` handle 134 secured by fastening means 4;0.

lIt .will be noted that when viewed from the undersideof Figure '1, flange `3, member 4` and the `rib connectingthe twoform a generally H- shaped reinforcingbracket .secured to the underside of thebase plate `.and extending normally r therefrom;

The `motor I3, preferably supported upon the horizontal plate of the support by suitable fastening means passing through holes `I9 is suitably housed bythe housing I as shown in Figurel. `Adjustment means for the speed of the .motor is preferably provided as shown at 8.

The speedof `the motor for pumping purposes is preferably reduced by a gear assembly including gears I2 and I4, thegear I2 being mount- 'ed upon shaft I8 mounted to rotate in bearing zow `II and secured as at 20. Shaft I8 at its outer for operation, the inlet and outlet accessories being 4omitted for the sake of clarity;

Figure 2 is an elevation of the driving means illustrating the gearing and the readily disengageable shaft connection to the pump;

Figure 3 is a side elevation of a pump embodying the present invention with a portion of I5 supported on the base .plate ,by the standard end is supplied with a spring coupling 9 of the type which may lbe readily disengaged, including a spring 33, and recess 32,` as shown in Fig` ureV 2.

The pump generally shown at 2 in Figure 1 includes a housing 2 with a drive shaft 23 having a projection `3I thereon arranged to engage aperture 32 in connection 9. ably supported in two water-proof bearings 24, the shaft between the bearings being completely surrounded by a collar of Duronze 11 as shown.

the casing broken away to show the` interior;

Figure 4 is a plan of the holding device or bracket preferably employed to removably secure l the pump on its support;

Figure 5 is a side elevation of the means provided in connection with the assembly of Figure 1 for clamping the assemblyfto a bed post, operating table, or like support;

Figure 6 is an enlarged view of the securing means shown in the upper right hand corner `of Figure 4.

Figure 7 is an elevation of the assembly of Figure 6.

Referring to Figure 1, the assembly as shown in its preferred embodiment preferably comprises a supportingelement including 'a relatively thin horizontal plate having a reinforcing ange 3 extending downward therefrom, the ange being recessed as shown at 39 in Figure 5 to receive a bed post, pipe or similar element upon which the device is adapted to be supported. The underside of the support also has a downwardly This collar is preferably welded at its points of connection so that therefis no possibility of leakage.

The casing of the pump is preferably constructed of Duronze 11 having the following properties:

Melting point 1025 C. Density at 22 C 8.55 Weight per cubic inch in pounds 3.09 Electrical conductivity 6.5% Electrical resistivity ohmsV per mil.

foot 159 Coefficient of linear expansion per degree F 0.0000093 Thermal conductivity (approx. of copper) 9 Tensile strength, pounds per square inch-hard drawn i 90,000 Tensile strength, pounds per square inch-annealed 55,000 Mod. of elasticity 15,000,000

extending member 4 having a bushing 38 mounted therein through which is threaded a rod 35 having a member 36 on the left end thereofV with a recess 31 adapted to cooperatewith recess 39 to clamp the device securely upon `the selected Rockwell hardness-annealed B50 Duronze 11 Weighs 4% less than copper, having a tensile strength of 40,000.

Referring to Figure?, the impeller of the pump comprises a series of pump fins 49; An

Shaft 23 is rotatinlet Ba (Figure 3) and an outlet 6b (Figure 3) are provided at the opposite ends of raceway 48 (Figure 3), the pumping operation forcing the material from the inlet to the outlet. In the pump construction shown in Figure '7, 5| represents the ring to support the fins 49 which are secured thereto as by welding. 50 represents a second ring which defines the outer boundary of raceway 48. To insure a more quiet operation of the pump, counterweights 22 may be employed as necessary.

For readily detaching the pump 2 from the support, a fastening means as shown in Figures 4, 5 and 6 is preferably provided. This device comprises a U-shaped bracket 28, the elements of which are suitably fastened to the upper face of the supporting plate, the underside of the U-shaped bracket being recessed to provide a groove. A similarly grooved arm 29 is pivoted to U-shaped bracket 28 at 38, arm 29 being slotted as shown at its free end to receive a clamping device 2| and clamping screw 2la.

When it is desired to fix this pump to the supporting plate, the screw 2|a is released and the arm 29 swung to open the bracket. supporting plate 26 on the bottom of the pump may then be slid into the U-shaped bracket, the extending edges thereof engaging the grooves on the underside of the bracket. Arm 29 is then swung into place and securely fastened byl.

screw 2 la. Thisprovides an arrangement whereby the pump is securely held in place and may be readily detached for cleansing purposes. Since the connection 9 is readily broken and maintained only by the spring 33, this connec" tion also facilitates ready removal of the pump.

I claim: 1. A pump support for securing a surgical pump to a bed post or like support and enabling its ready removal for cleaning, comprising a rela-'40 tively flat base plate, means to support said plate in a substantially horizontal position on a bed post or like fixture including a reinforcing plate extending substantially normal from the underside of said base plate, a projecting member on said reinforcing plate substantially normal thereto and provided with a recess therein to receive the bed post or like xture, means to clamp the bed post or like fixture in said recess, a U-shaped bracket on the upper surface of said base plate, said bracket being grooved to receive a pump base, a grooved member hinged to one arm of said U-shaped bracket and arranged to be swung into position across the closed end of said U- shaped bracket to secure the pump base in position on said base plate, and easily removable fastening means to secure the free end of said hinged element to the opposite arm of said U- shaped bracket.

v2. A pump support for securing a surgical pump to a bed post or like support and enabling its ready removal for cleaning comprising a relatively flat base plate, means to support said plate in a substantially horizontal position on a bed post or like fixture, including a substantially H- shaped reinforcing bracket secured to the underside of said base plate and extending normally therefrom, means in the cross member of said bracket including a clamp member and a recess to receive and secure the bed post or like fixture, a U-shaped bracket on the upper surface of said base plate, said bracket being grooved to receive a pump base, a grooved member hinged to one arm of said U-shaped bracket and arranged to be swung into position across the closed end of said U-shaped bracket to secure the pump base in position on said base plate, and easily removable fastening means to secure the free end of said hinged element to the opposite arm of said U-shaped bracket.

HELMUTH R. LIEBETRAU. 

